I knew it! The NT01s are pretty loud and their hum is pretty distinctive. I'm running the same tire setup as you--this is my second set. I've been very happy with them. They stick much better than street tires, they last a long time, they actually do communicate a bit before breaking away, and they're relatively inexpensive.

With the "Bridge" turn, I guess you just have to cut in towards the blind apex and hope there isn't a spun car, a woodchuck, or a moose on the other side.

I'm on my first set of NT01s and I like them a lot. I need to get some camber into the car really soon or they'll be corded in no time.

At the Bridge there is always a corner worker on the right side of that corner that you can see coming up the hill. All Canadian corner workers have a yellow flag, a blue flag, and either a Woodchuck or Moose flag, so it's a pretty safe corner.